期刊
CHEMICAL ENGINEERING JOURNAL
卷 328, 期 -, 页码 320-330出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.07.046
关键词
pH-responsively; Nanopesticide; Controlled-release; Collectability
资金
- National Natural Science Foundation of China [21407151]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2015385]
- Chinese Academy of Sciences [KSZD-EW-Z-022-05, KFJ-STS-ZDTP-002, KFJ-SW-STS-143]
- President Foundation of Hefei Institutes of Physical Science of Chinese Academy of Sciences [YZJJ201502]
In this work, we constructed a multifunctional nanopesticide system, a pH-responsively controlled-release pesticide (PRCRP) with magnetic collectability performance, to effectively improve the pesticide utilization efficiency (UE). Herein, herbicide (glyphosate) and pesticide (cypermethrin) were respectively loaded in the micro-nano pores of diatomite/Fe3O4, a magnetic nanocarrier, which was fabricated through in-situ deposition method. Afterwards, the resulting pesticide/diatomite/Fe3O4 was coated by chitosan which can be dissolved in acid condition so as to control the release of pesticide. The magnetism resulted from Fe3O4 endowed PRCRP a feasible magnetic collection performance. After the release of pesticide, PRCRP could be separated conveniently from water and soil with a high collection ratio. PRCRP displayed a high adhesion capacity on the weed surface and pest epidermis, a significantly controlled-release performance, a high UE, an outstanding control efficacy on weed and pest, and potential collectability in practice. Therefore, this technology may have a promising application potential in reducing pesticide residue and risk to the environment. (C) 2017 Elsevier B.V. All rights reserved.
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